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How a freak diversion of the jet stream is paralysing the globe with freezing conditions
The freezing conditions that have blasted Britain are being blamed on a series of weather patterns that are bringing Arctic temperatures to much of western Europe, California and even Australia.
One of the main factors is a change in the position of the jet stream - the fast-moving current of air that moves from west to east, high in the atmosphere
A Met Office spokesman: ‘The problem is we are not getting the warmer Atlantic air that normally keeps our winters mild.’We can see that it is unseasonably warm over Canada and Greenland, this is where warm air has been diverted.’He said that any change in the pressure over the Atlantic would need to last for several days before we would notice any change in the weather in Europe.
Freezing-cold winters and milder winters tend to cluster in groups, as the jet stream changes its path. Experts are still unsure why this is but suspect it may be related to the EL Nino weather system as well as changes in sea temperatures and solar activity.
Originally posted by OzWeatherman
reply to post by jennybee35
No thats incorrect
The reason for the cold weather is La Nina, which affects the jetstream. Ive said it already dozens of times here....I do actually monitor the weather for a living. They have a relation, but the main cause is La Nina
You must remember, while the east coast of Australia has been suffering colder and wetter weather than normal, the entire west coast where I live and work has just gone through our driest year on record and late winter, spring and the start of summer, have been a lot hotter than normal.
I really wish I could explain more to you guys, but everytme I say something I get accused of covering up for weather modification or nobody believs me.
I guess when we found out earlier this year that La Nina was becoming more prevalent (thanks to the climate section at work), I shouldve expected this from ATS
There is also evidence that the effect of higher air temperatures in the Arctic atmosphere in fall is contributing to changes in the atmospheric circulation in both the Arctic and northern mid-latitudes. Winter 2009-2010 showed a link between mid-latitude extreme cold and snowy weather events and changes in the wind patterns of the Arctic, related to a phase of the Arctic Oscillation.
Experts are still unsure why this is but suspect it may be related to the EL Nino weather system